4827EC ICM: control unit, internal fault

Fault code 4827EC ICM: control unit, internal fault code is related to the problem with integrated chassis management (ICM). Integrated chassis management is used in bmw to manage dynamic control system. also it is connected to all the control module present in vehicle like, central display, climate control module, radio, abs, power steering control module, ride height control module, headlight etc. if any one of these control module is not working, check fault codes present in the control module. if it is containing any fault code related to the ICM control module. then it is quite possible that integrated chassis management control module is faulty.

Symptoms of 4827EC ICM: control unit, internal fault :

  • Headlight failure problem.
  • Music system not working.
  • Dynamic system not working.
  • Hard power steering.
  • low volatge supply in all control module.
  • also missbehiviour in height control system.
warning lights on cluster meter

How to trouble shoot 4827EC ICM: control unit, internal fault :

Solution of this problem is depend on fault code present in that control module which is not functioning properly.

  • CASE#1: Mechanic need to scan the vehicle with the help of scan tool to find the trouble code present in the control module. like if power steering get hard and the warning light of power steering is showing on cluster meter. than mechanic need to check the fault code present in the control module. if fault code is related to the problem with integrated chassis management control module. than go to check the fault code in the ICM control module, look for any trouble code present in the control module which is indicating towards the faulty ICM than replace it with the new control module and go for coding and programming. Perform similar process for problem of any above.
  • In some cases there is a lot of fault code is present in all the control modules. which will be indicating towards problem of faulty ICM control module. check fault code present in ICM control module, if any fault code is present in it like 4827EC ICM: control unit, internal fault which is indicating problem toward ICM than change it.do not forget to do coding and programming after replacement.
  • CASE#2: if headlight is not working properly, or problem is occuring in headlight and fault code is indicating problem from ICM control module. Then first check the fault code in headlight controller and confirm weather the problem is in headlight controller or ICM. When headlight is not working or fluctuations occurs inside headlight it might be happen due to faulty ICM.
  • CASE#3: In case of low voltage problem, if found low voltage in all control module. check alternator properly if it is workingn and making require voltage that means it is working good. check battery condition if it is also good than go to check all control module fault code. if fault code present in control modules showing the problem or wrong signal coming from ICM control module. then go to check ICM control module and rectify the present fault codes.
fault code

Solution of 4827EC ICM: control unit, internal fault :

  • Replace faulty ICM control module.
  • Repair wiring harness of ICM.
  • Replace other faulty control mody
  • Repair wiring harness of other control module.
  • also If replacing faulty ICM control module perform coding and programming.

Special note :

In my case there was a problem with low voltage supply in all control module in bmw X5 E90. Central display was showing fault in all the control module. when i scan the system with the help scan tool i found low voltage supply in all control module. like ECM, TCM, ABS, ESP, DSC etc. every fault which was present in control module was indicating problem in the ICM control module. when i scan the ICM control module i got fault code 4827EC ICM: control unit, internal fault. this fault code is clearly showing that the ICM control module is fautly. after replacing Intefrated chassis management control module which fix my problem.

located below the hand rest in bmw x5

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